02.01.2024 06:29, Jason Wang :
When HASH_REPORT is negotiated, the guest_hdr_len might be larger than the size of the mergeable rx buffer header. Using virtio_net_hdr_mrg_rxbuf during the header swap might lead a stack overflow in this case. Fixing this by using virtio_net_hdr_v1_hash instead.Reported-by: Xiao Lei <leixiao....@zju.edu.cn> Cc: Yuri Benditovich <yuri.benditov...@daynix.com> Cc: qemu-sta...@nongnu.org Cc: Mauro Matteo Cascella <mcasc...@redhat.com> Fixes: CVE-2023-6693 Fixes: e22f0603fb2f ("virtio-net: reference implementation of hash report") Signed-off-by: Jason Wang <jasow...@redhat.com>
Reviewed-by: Michael Tokarev <m...@tls.msk.ru> /mjt
